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Operator′s manual
Please read the operator’s manual carefully and
make sure you understand the instructions
before using the machine.
GR41 GR50 RS44 RS52
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15 m 50FT KEY TO SYMBOLS Symbols Noise emission to the environment according to the European Community’s WARNING! Clearing saws, brushcutters Directive. The machine’s emission is and trimmers can be dangerous! Careless specified in chapter Technical data and on or incorrect use can result in serious or label. fatal injury to the operator or others. It is extremely important that you read and Other symbols/decals on the machine refer to special un
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CONTENTS Contents Note the following before starting: KEY TO SYMBOLS Please read the operator’s manual carefully. Symbols ....................................................................... 2 CONTENTS WARNING! Long-term exposure to noise can Contents ...................................................................... 3 result in permanent hearing impairment. So ! Note the following before starting: ..........................
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INTRODUCTION Dear Customer, Congratulations on your choice to buy a Jonsered product! We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very long time to come. The purchase of one of our products gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the address of your nearest service work
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WHAT IS WHAT? 23 24 What is what on the clearing saw? (GR41/GR50/RS44) 1 Blade 15 Handle adjustment 2 Grease filler cap, bevel gear 16 Harness 3 Bevel gear 17 Locking nut 4 Cutting attachment guard 18 Support flange 5 Shaft 19 Support cup 6 Handlebar 20 Drive disc 7 Throttle control 21 Trimmer head 8 Stop switch 22 Socket spanner 9 Throttle lockout 23 Operator′s manual 10 Support eyes for harness 24 Transport guard 11 Cylinder cover 25 Allen key 12 Starter handle 26 Carburettor screw
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WHAT IS WHAT? What is what on the clearing saw? (RS52) 1 Blade 15 Fuel tank 2 Grease filler cap, bevel gear 16 Socket spanner 3 Bevel gear 17 Handle adjustment 4 Cutting attachment guard 18 Locking nut 5 Shaft 19 Support flange 6 Handlebar 20 Drive disc 7 Throttle control 21 Transport guard 8 Stop switch 22 Harness 9 Throttle lockout 23 Operator′s manual 10 Support eyes for harness 24 Allen key 11 Cylinder cover 25 Locking pin 12 Starter handle 26 Gearbox grease 13 Choke control 27 C
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GENERAL SAFETY PRECAUTIONS Important WARNING! Listen out for warning signals or shouts when you are wearing hearing ! protection. Always remove your hearing IMPORTANT! protection as soon as the engine stops. The machine is only designed for trimming grass, grass HELMET clearing and/or forestry clearing. A helmet should be worn if the trees being cleared are taller The only accessories you can operate with this engine unit than 2 m. are the cutting attachments we recommen
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GENERAL SAFETY PRECAUTIONS Press the throttle lockout and make sure it returns to its ′′ Machine′′s safety equipment original position when you release it. This section describes the machine′s safety equipment, its purpose, and how checks and maintenance should be carried out to ensure that it operates correctly. See the ”What is what?” section to locate where this equipment is positioned on your machine. The life span of the machine can be reduced and the risk of acc
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GENERAL SAFETY PRECAUTIONS Regularly check the vibration damping units for cracks or Cutting attachment guard deformation. Check that the vibration damping element is undamaged and securely attached. WARNING! Overexposure to vibration can This guard is intended to prevent loose objects from being lead to circulatory damage or nerve damage thrown towards the operator. The guard also protects the ! in people who have impaired circulation. operator from accidental contact with the cutting at
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GENERAL SAFETY PRECAUTIONS For mufflers it is very important that you follow the instructions Locking nut on checking, maintaining and servicing your machine. See instructions under the heading Checking, maintaining and servicing the machine’s safety equipment. Never use a machine that has a faulty muffler. A locking nut is used to secure some types of cutting attachment. Regularly check that the muffler is securely attached to the When fitting, tighten the nut in the opposite direction to the
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GENERAL SAFETY PRECAUTIONS General rules Cutting equipment This section describes how to choose and maintain your cutting equipment in order to: Only use cutting attachments with the guards we • Reduce the risk of blade thrust. recommend! See the chapter on Technical data. • Obtain maximum cutting performance. • Extend the life of cutting equipment. IMPORTANT! Keep the teeth of the blade correctly sharpened! Follow our Only use cutting attachments with the guards we instructions and use the
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GENERAL SAFETY PRECAUTIONS Sharpening the saw blade Trimmer head IMPORTANT! Always ensure the trimmer cord is wound tightly and evenly • See the cutting attachment packaging for correct around the drum, otherwise the machine will generate sharpening instructions. harmful vibration. A correctly sharpened blade is essential for working efficiently • Only use the recommended trimmer heads and trimmer and to avoid unnecessary wear to the blade and clearing saw. cords. These have been tested by t
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ASSEMBLY Assembling the handlebar and Assembling the handlebar and throttle (GR41/GR50) throttle (RS44/RS52) • Remove the screw at the rear of the throttle handle. • Unscrew the knob from the handlebar mounting. • Slide the throttle handle onto the right side of the • Position the handlebar as shown. Fit the mounting handlebar, (see diagram). components and tighten the knob lightly. • Fit the right handle to the handlebar using the screw, washer, sleeve and nut as shown. Tighten. • Align the
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ASSEMBLY • Fit the support flange (F) on the output shaft. Make sure Assembling the cutting equipment that the blade is centered by fitting it to the guide on the support flange. WARNING! • Screw the support cup (E) onto the output shaft threads (CAUTION! Left-hand thread). Tighten to a torque of 35- When fitting the cutting attachment it is ! 50 Nm (3.5-5.0 kpm). Use the socket spanner in the tool extremely important that the raised section kit. Note that the locking pin (C) must remain insi
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ASSEMBLY guard as possible. To tighten the nut, turn the spanner in • Tighten the trimmer head to a torque of 35-50 Nm (3.5-5 the opposite direction to the direction of rotation (Caution! kpm). left-hand thread). H G F D B • To dismantle, follow the instructions in the reverse order. C When loosening and tightening the saw blade nut, there is a Fitting other guards and cutting risk of injury from the teeth of the saw blade. You should therefore always ensure that your hand is shielded by the
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ASSEMBLY 2 Grass clearing Adjusting the harness and clearing The machine should be supported in a harness when saw grass clearing so that the cutting equipment is parallel to the ground. WARNING! When using a clearing saw it must always be hooked securely to the ! harness. Otherwise you will be unable to control the clearing saw safely and this can result in injury to yourself or others. Never use a harness with a defective quick release. Standard harness Vector harness Safety release At
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ASSEMBLY 4 Adjust the height of the suspension hook as described in the instructions for the standard harness. (Forestry clearing) 5 If you need to lower the suspension hook, for trimming for example, move the suspension strap (A) to the lower mounting point on the backplate. 6 The elastic strap (B) can be tightened to transfer more load from the shoulder straps to the hip strap. Correct balance 1 Forestry clearing The machine is balanced by moving the suspension ring on the machine forwar
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FUEL HANDLING Petrol Fuel safety Never start the machine: 1 If you have spilt fuel on it. Wipe off the spillage and allow remaining fuel to evaporate. CAUTION! Always use a quality petrol/oil mixture at least 90 octane (RON). If your machine is equipped with a catalytic 2 If you have spilt fuel on yourself or your clothes, change converter (see chapter on Technical data) always use a good your clothes. Wash any part of your body that has come in quality unleaded petrol/oil mixture. Leaded
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FUEL HANDLING Mixing Fuelling • Always mix the petrol and oil in a clean container intended for fuel. • Always start by filling half the amount of the petrol to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of petrol. WARNING! Taking the following precautions, will lessen the risk of fire: • Mix (shake) the fuel mixture thoroughly before filling the ! machine’s fuel tank. Do not smoke or place hot objects near fuel. Always shut off the engin
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STARTING AND STOPPING Check before starting Starting and stopping • Check the blade to ensure that no cracks have formed at the bottom of the teeth or by the centre hole. The most WARNING! The complete clutch cover and common reason why cracks are formed is that sharp shaft must be fitted before the machine is ! corners have been formed at the bottom of the teeth while started, otherwise the clutch can come loose sharpening or that the blade has been used with dull and cause personal inju
